US1402207A - Extractor attachment - Google Patents

Description

F. A. BLAKE. EXTRACJOR ATTACHMENT. APPLICATION man wzi 9 FISH- Ila INVENTEJ R FREDAELA B ATTURNEY EXTRACTOR ATTAEHIVIENT.

Specification of Letters Patent.

Patented Jan. 3, 1922.

Application filed. August 4, 1921. Serial No. 489,803.

To all whom it may concern:

Be it known that I, Fnnonnrox A. BLAKE, a citizen of the United States of America, residing at Gardner in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Extractor Attachments, of which the following is a specification.

This invention relates to improvements in attachments for centrifugal laundry extractors and its leading object is to provide means whereby a standard laundry extractor may be quickly and easily equipped to evenl distribute the clothes or garments whic are to be subjected to the extracting process within the extractor basket or bowl, so as to obtain a proper balance of the basket or bowl and prevent the clothes or garments from being torn, as a result of opposing thrusts developed in the garments when they cross the axis of the rotating basket.

Another object of the invention is to provide an attachment of this character which may be connected or disconnected without altering the construction of the machine.

With the above and other objects in view the invention consists in certain new and use ful constructions, arrangements and relations of parts, clearly described in the following specification and fully illustrated in the accompanying drawings, in which Fig. 1 is a side elevation, partly in vertical section, of an extractor equipped with my attachment.

Fig. 2 is a detail sectional view of a coupling, taken on an enlarged scale.

Fig.3 is a vertical sectional view through an extractor showing a modified form of the attachment.

Fig. dis a top plan view thereof, showing the bearing bar in unlatched position.

Fig. 5 is a detail vertical sectional view on an enlarged scale, showing a modified coupling.

Fig. 6 is a detail vertical sectional view on an enlarged scale of a spring nut construction.

Fig. 7 is a side elevation of a cone.

Fig. 8 is a plan view thereof.

Fig. 9 is a plan view of a modified form, having a series of radial ribs.

Referring to the accompanying drawings illustrating the practical embodiment of the invention 5 designates a base on which the standard 6 is mounted, which carries the casing bowl 7, the bottom of which is provided with a drain channel 8, which discharges through the outlet pipe 9. A shaft 10 1s ournaled vertically on the standard 6 and is equipped with a pulley 10, located in centrifugal action. The bottom 11 is held in place on the shaft 10 by means of a nut 18. In the common laundry extractor constructions this nut is a cap type nut, which I remove and substitute with a sleeve nut, as shown. The nut 13 is of greater depth than the upper end of the shaft 10, which pro ects above the bottom 11, and which proecting portion may be straight, as shown,- so that when the nut 13 is threaded thereon all of the bore of the nut will not be filled by the projecting portion of the shaft.

The lower end of a post 14 is threaded into the nut 13 in abutting engagement with the upper end of the shaft 10, and on this post a cone 17 is mounted. The lower and larger end of this cone is provided with an end wall 18, the outer edge of which is turned over the lower edge portion of the wall 17 a of the cone, and permanently united thereto, by a clamping fit, solder, or the i like. A weight 17, of heavy metal, such as lead, or other material is disposed in the lower part of the cone, to balance the rotation of the extractor bowl. The bottom 18 of the cone 17 is preferably formed concave to overlie and enclose the nut 13, and strengthen the base of the cone.

The upper andsmaller end of the cone is closed by means of a cap 19, against which is threaded the cap nut 16, carried by the upper end of the post. This nut may be replaced by a head formed integral with the upper end of the post. In this way the cone is clamped in place against vertical displacement.

The angle of the cone is approximately about 16 degrees from the vertical, as shown, but this angle may be slightly varied without impairing the efiiciency of the attachment.

In Fig. 5 I show an interfitting connection between the shaft 10 and the post 14 wherein the shaft is formed with a longitudivnal socket 10 in which the threaded projection 14 of the post is threaded; the joint between the two sections or post and shaft being bridged by the coupling nut 13 In F igs. 3, l and 6, I show a modified form of the attachment, wherein means is provided for supporting the shaft against lateral play, and the shaft is extended to provide the axial support for the cone. Referring to these figures 6- designates a standard, which carries the casing bowl 7, having the bottom 7" provided with the usual drain channel 8', discharging through the outlet 9. The shaft 20 is provided with a tapered portion 20, which is engaged by the conical bearing 11 carried by the bottom 11 of the extractor basket 12, which is held in place on the shaft by means of the nut 21, threaded thereon. The cone 17 is supported on the extension 20 of the shaft 20, and is provided with the bottom 18 and the weighted filler 17, disposed against the bottom. A cap 19' is mounted on the upper and smaller end of the cone.

The upper end of the extension 20 is provided with screw threads which are engaged by the nut 22, and the terminal portion of the extension 20' extends above the nut 22 and is provided with a tapered point 20".

The shaft extension 20 is supported against lateral movement by means of a bearing bar 25, which is formed with a central bearing 25 for the pointed end 20 of the shaft extension. The ends of this bear ing bar are provided with hook like members 27, which are adapted to interlockingly engage the lugs 28 formed or provided, as

by riveting or spot welding, on the side of the casing bowl 7 By rotating the bar to the position shown in Fig. 4: the terminals of the bar may be disengaged from the lugs 28 and the bar removed. The point 20 is normally protected by means of a shield member 24, which is pressed upwardly by means ofa spring 23, located between the nut 22 and said shield member, as shown in enlarged section in Fig. 6. When the bearing bar is in latched position the shield member will be depressed and the pointed end of the shaft extension will lie in the bearing 25'.

The cone prevents shirts and other garments from becoming twisted on themselves or crossing the center or axis of the rotating extractor bowl, and thus developing opposing thrusts or pulls calculated to rip the garment.

I have found from extensive actual trial that an extractor equipped with my attachment can be loaded more quickly than the present type of open extractonand the load more evenly distributed in the extractor bowl or basket, so that a balanced rotation thereof is obtained. This enables the operator to save considerable time, as it eliminates the necessity of readjusting the load, and thus increases the effective running time of the extractor and reduces the actual time required to extract water from a given load. By insuring a balanced rotation of the extractor bowl the efiiciency and working life of the extractor is greatly increased'and the tendency toward accidents from disruption of the parts of the extractor is reduced to a minimum. Furthermore, the tendency of the basket to wobble in its casing'bowl, with liability of breakage. and injury of limb or loss of life, is practically removed. All this is accomplished without involving any structural changes in the extractor or interfering with its normal operative control,

andby effectively preventing the tearing of garments during the operation of extracting the excess water. In F ig.9 I show a modi fied form having a series of radial ribs and provided with comb-shaped ribs. This device includes the ribs 30, and the triangularribs 31, radially spaced from each other.

Having described my invention I claim: 1. The combination with a centrifugal extractor havinga rotary bowl, of a cone approximately equal in length to the depth of the bowl, a nut disposed against the bottom 'of the bowl, a post threaded on said nut and extending through said cone and a nut threaded on said post against said cone.

2. An attachment for centrifugal dryers consisting of a cone provided with means having axial openings therein, and a post adapted to extend through the cone and provided'with a head on its upper end to engage the upper end of the cone and with a screw thread on its lower end adaptedto be coupled with the clamping nut of an extractor bowl. 7

3. In combination, a centrifugal extractor having a vertical shaft, a bowl mounted for rotation thereon and havin a seat on the shaft, said shaft being provided with screw threads on its upper-end, a cone disposed against the base of the bowl, a'post extending through the cone and having screw threads to engage the screw threads of the shaft, a coupling nut connecting the lower placed by the bearing bar.

5. Attachment'for centrifugal laundry extractors consisting of a cone having end cone and being screw-threaded, and a nut carried by said post for detachable engagement with the threaded end of the shaft of 10 an extractor bowl.

Signed by me at Springfield, Mass.

FREDERICK A. BLAKE.

Images